[Telemetry] Cleanup some unused variables in page_sets.

tools/perf/page_sets/tough_pinch_zoom_cases.py

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 from telemetry.page import page as page_module
 from telemetry.page import shared_page_state
 from telemetry import story
 
 
 class ToughPinchZoomCasesPage(page_module.Page):
 
   def __init__(self, url, page_set, name=''):
     super(ToughPinchZoomCasesPage, self).__init__(
         url=url, page_set=page_set, name=name,
         shared_page_state_class=shared_page_state.SharedDesktopPageState,
         credentials_path = 'data/credentials.json')
-    self.archive_data_file = 'data/tough_pinch_zoom_cases.json'
     self.target_scale_factor = page_set.target_scale_factor
 
   def RunPinchGesture(self, action_runner, left_anchor_ratio=0.5,
                       top_anchor_ratio=0.5, scale_factor=None,
                       speed_in_pixels_per_second=800):
       with action_runner.CreateGestureInteraction('PinchAction',
                                                   repeatable=True):
         action_runner.PinchPage(
             left_anchor_ratio=left_anchor_ratio,
             top_anchor_ratio=top_anchor_ratio,
@@ skipping 243 matching lines @@
   def __init__(self):
     super(AndroidToughPinchZoomCasesPageSet, self).__init__(7.0)
 
 
 class DesktopToughPinchZoomCasesPageSet(ToughPinchZoomCasesPageSet):
 
   """ ToughPinchZoomCasesPageSet using the maximum desktop zoom level """
 
   def __init__(self):
     super(DesktopToughPinchZoomCasesPageSet, self).__init__(4.0)